 The resettlement of the Roman Durovernum under the name "burh of the men of Kent," "Cant-wara-byrig" or Canterbury, illustrates this point.The burh of the men of West Kent was Hrofesceaster (Durobrivae), Rochester, and many other ceasters mark the existence of a Roman camp occupied by an early English burh.The tribal burh was protected by an earthen wall, and a general obligation to build and maintain burhs at the royal command was enforced by Anglo-Saxon law.